| 1 |
/* |
| 2 |
================================================================== |
| 3 |
Photon map generator |
| 4 |
|
| 5 |
Roland Schregle (roland.schregle@{hslu.ch, gmail.com}) |
| 6 |
(c) Fraunhofer Institute for Solar Energy Systems, |
| 7 |
Lucerne University of Applied Sciences & Arts |
| 8 |
================================================================== |
| 9 |
|
| 10 |
$Id: mkpmap.c,v 2.2 2015/05/21 05:54:54 greg Exp $ |
| 11 |
*/ |
| 12 |
|
| 13 |
|
| 14 |
|
| 15 |
#include "pmap.h" |
| 16 |
#include "pmapmat.h" |
| 17 |
#include "pmapcontrib.h" |
| 18 |
#include "pmaprand.h" |
| 19 |
#include "paths.h" |
| 20 |
#include "ambient.h" |
| 21 |
#include "resolu.h" |
| 22 |
#include "source.h" |
| 23 |
#include <string.h> |
| 24 |
#include <sys/stat.h> |
| 25 |
|
| 26 |
|
| 27 |
|
| 28 |
extern char VersionID []; |
| 29 |
|
| 30 |
|
| 31 |
|
| 32 |
char* progname; /* argv[0] */ |
| 33 |
int dimlist [MAXDIM]; /* sampling dimensions */ |
| 34 |
int ndims = 0; /* number of sampling dimenshunns */ |
| 35 |
char* octname = NULL; /* octree name */ |
| 36 |
CUBE thescene; /* scene top-level octree */ |
| 37 |
OBJECT nsceneobjs; /* number of objects in scene */ |
| 38 |
double srcsizerat = 0.01; /* source partition size ratio */ |
| 39 |
int backvis = 1; /* back face visibility */ |
| 40 |
int clobber = 0; /* overwrite output */ |
| 41 |
COLOR cextinction = BLKCOLOR; /* global extinction coefficient */ |
| 42 |
COLOR salbedo = BLKCOLOR; /* global scattering albedo */ |
| 43 |
double seccg = 0; /* global scattering eccentricity */ |
| 44 |
int ambincl = -1; /* photon port flag */ |
| 45 |
char *amblist [AMBLLEN + 1]; /* photon port list */ |
| 46 |
char *diagFile = NULL; /* diagnostics output file */ |
| 47 |
int rand_samp = 1; /* uncorrelated random sampling */ |
| 48 |
|
| 49 |
|
| 50 |
/* Dummies for linkage */ |
| 51 |
|
| 52 |
COLOR ambval = BLKCOLOR; |
| 53 |
double shadthresh = .05, ambacc = 0.2, shadcert = .5, minweight = 5e-3, |
| 54 |
ssampdist = 0, dstrsrc = 0.0, specthresh = 0.15, specjitter = 1.0, |
| 55 |
avgrefl = 0.5; |
| 56 |
int ambvwt = 0, ambssamp = 0, ambres = 32, ambounce = 0, directrelay = 1, |
| 57 |
directvis = 1, samplendx, do_irrad = 0, ambdiv = 128, vspretest = 512, |
| 58 |
maxdepth = 6, contrib = 0; |
| 59 |
char *shm_boundary = NULL, *ambfile = NULL, *RCCONTEXT = NULL; |
| 60 |
void (*trace)() = NULL, (*addobjnotify [])() = {ambnotify, NULL}; |
| 61 |
|
| 62 |
|
| 63 |
|
| 64 |
void printdefaults() |
| 65 |
/* print default values to stdout */ |
| 66 |
{ |
| 67 |
puts("-apg file nPhotons\t\t# global photon map"); |
| 68 |
puts("-apc file nPhotons\t\t# caustic photon map"); |
| 69 |
puts("-apd file nPhotons\t\t# direct photon map"); |
| 70 |
puts("-app file nPhotons bwidth\t# precomputed global photon map"); |
| 71 |
#if 0 |
| 72 |
/* Hide this option as most likely useless and confusing to user */ |
| 73 |
puts("-appb file nPhotons minBw maxBw\t# precomp bias comp global pmap"); |
| 74 |
#endif |
| 75 |
puts("-apv file nPhotons\t\t# volume photon map"); |
| 76 |
puts("-apC file nPhotons\t\t# contribution photon map"); |
| 77 |
|
| 78 |
printf("-apD %f\t\t\t# predistribution factor\n", preDistrib); |
| 79 |
printf("-apM %d\t\t\t\t# max predistrib passes\n", maxPreDistrib); |
| 80 |
printf("-apm %ld\t\t\t# max photon bounces\n", photonMaxBounce); |
| 81 |
puts("-apo mod\t\t\t# photon port modifier"); |
| 82 |
puts("-apO file\t\t\t# photon port file"); |
| 83 |
printf("-apP %f\t\t\t# precomputation factor\n", finalGather); |
| 84 |
printf("-apr %d\t\t\t\t# random seed\n", randSeed); |
| 85 |
puts("-aps mod\t\t\t# antimatter sensor modifier"); |
| 86 |
puts("-apS file\t\t\t# antimatter sensor file"); |
| 87 |
|
| 88 |
printf(backvis ? "-bv+\t\t\t\t# back face visibility on\n" |
| 89 |
: "-bv-\t\t\t\t# back face visibility off\n"); |
| 90 |
printf("-dp %.1f\t\t\t# PDF samples / sr\n", pdfSamples); |
| 91 |
printf("-ds %f\t\t\t# source partition size ratio\n", srcsizerat); |
| 92 |
printf("-e %s\t\t\t# diagnostics output file\n", diagFile); |
| 93 |
printf(clobber ? "-fo+\t\t\t\t# force overwrite" |
| 94 |
: "-fo-\t\t\t\t# do not overwrite\n"); |
| 95 |
printf("-i %-9ld\t\t\t# photon heap size increment\n", |
| 96 |
photonHeapSizeInc); |
| 97 |
printf("-ma %.2f %.2f %.2f\t\t# scattering albedo\n", |
| 98 |
colval(salbedo,RED), colval(salbedo,GRN), colval(salbedo,BLU)); |
| 99 |
printf("-me %.2e %.2e %.2e\t# extinction coefficient\n", |
| 100 |
colval(cextinction,RED), colval(cextinction,GRN), |
| 101 |
colval(cextinction,BLU)); |
| 102 |
printf("-mg %.2f\t\t\t# scattering eccentricity\n", seccg); |
| 103 |
printf("-t %-9d\t\t\t# time between reports\n", photonRepTime); |
| 104 |
|
| 105 |
#ifdef PMAP_ROI |
| 106 |
/* Ziss option for ze egg-spurtz only! */ |
| 107 |
printf("-api \t%.0e %.0e %.0e\n\t%.0e %.0e %.0e\t# region of interest\n", |
| 108 |
pmapROI [0], pmapROI [1], pmapROI [2], pmapROI [3], |
| 109 |
pmapROI [4], pmapROI [5]); |
| 110 |
#endif |
| 111 |
} |
| 112 |
|
| 113 |
|
| 114 |
|
| 115 |
|
| 116 |
int main (int argc, char* argv []) |
| 117 |
{ |
| 118 |
#define check(ol, al) if (argv [i][ol] || \ |
| 119 |
badarg(argc - i - 1,argv + i + 1, al)) \ |
| 120 |
goto badopt |
| 121 |
|
| 122 |
#define check_bool(olen, var) switch (argv [i][olen]) { \ |
| 123 |
case '\0': var = !var; break; \ |
| 124 |
case 'y': case 'Y': case 't': case 'T': \ |
| 125 |
case '+': case '1': var = 1; break; \ |
| 126 |
case 'n': case 'N': case 'f': case 'F': \ |
| 127 |
case '-': case '0': var = 0; break; \ |
| 128 |
default: goto badopt; \ |
| 129 |
} |
| 130 |
|
| 131 |
int loadflags = IO_CHECK | IO_SCENE | IO_TREE | IO_BOUNDS, rval, i; |
| 132 |
char **portLp = NULL, **sensLp = photonSensorList; |
| 133 |
struct stat pmstat; |
| 134 |
|
| 135 |
/* Global program name */ |
| 136 |
progname = fixargv0(argv [0]); |
| 137 |
/* Initialize object types */ |
| 138 |
initotypes(); |
| 139 |
|
| 140 |
/* Parse options */ |
| 141 |
for (i = 1; i < argc; i++) { |
| 142 |
/* Eggs-pand arguments */ |
| 143 |
while ((rval = expandarg(&argc, &argv, i))) |
| 144 |
if (rval < 0) { |
| 145 |
sprintf(errmsg, "cannot eggs-pand '%s'", argv [i]); |
| 146 |
error(SYSTEM, errmsg); |
| 147 |
} |
| 148 |
|
| 149 |
if (argv[i] == NULL) |
| 150 |
break; |
| 151 |
|
| 152 |
if (!strcmp(argv [i], "-version")) { |
| 153 |
puts(VersionID); |
| 154 |
quit(0); |
| 155 |
} |
| 156 |
|
| 157 |
if (!strcmp(argv [i], "-defaults") || !strcmp(argv [i], "-help")) { |
| 158 |
printdefaults(); |
| 159 |
quit(0); |
| 160 |
} |
| 161 |
|
| 162 |
/* Get octree */ |
| 163 |
if (i == argc - 1) { |
| 164 |
octname = argv [i]; |
| 165 |
break; |
| 166 |
} |
| 167 |
|
| 168 |
switch (argv [i][1]) { |
| 169 |
case 'a': |
| 170 |
if (!strcmp(argv [i] + 2, "pg")) { |
| 171 |
/* Global photon map */ |
| 172 |
check(4, "ss"); |
| 173 |
globalPmapParams.fileName = argv [++i]; |
| 174 |
globalPmapParams.distribTarget = |
| 175 |
parseMultiplier(argv [++i]); |
| 176 |
if (!globalPmapParams.distribTarget) |
| 177 |
goto badopt; |
| 178 |
globalPmapParams.minGather = globalPmapParams.maxGather = 0; |
| 179 |
} |
| 180 |
|
| 181 |
else if (!strcmp(argv [i] + 2, "pm")) { |
| 182 |
/* Max photon bounces */ |
| 183 |
check(4, "i"); |
| 184 |
photonMaxBounce = atol(argv [++i]); |
| 185 |
if (!photonMaxBounce) |
| 186 |
goto badopt; |
| 187 |
} |
| 188 |
|
| 189 |
else if (!strcmp(argv [i] + 2, "pp")) { |
| 190 |
/* Precomputed global photon map */ |
| 191 |
check(4, "ssi"); |
| 192 |
preCompPmapParams.fileName = argv [++i]; |
| 193 |
preCompPmapParams.distribTarget = |
| 194 |
parseMultiplier(argv [++i]); |
| 195 |
if (!preCompPmapParams.distribTarget) |
| 196 |
goto badopt; |
| 197 |
preCompPmapParams.minGather = preCompPmapParams.maxGather = |
| 198 |
atoi(argv [++i]); |
| 199 |
if (!preCompPmapParams.maxGather) |
| 200 |
goto badopt; |
| 201 |
} |
| 202 |
|
| 203 |
#if 0 |
| 204 |
else if (!strcmp(argv [i] + 2, "ppb")) { |
| 205 |
/* Precomputed global photon map + bias comp. */ |
| 206 |
check(5, "ssii"); |
| 207 |
preCompPmapParams.fileName = argv [++i]; |
| 208 |
preCompPmapParams.distribTarget = |
| 209 |
parseMultiplier(argv [++i]); |
| 210 |
if (!preCompPmapParams.distribTarget) |
| 211 |
goto badopt; |
| 212 |
preCompPmapParams.minGather = atoi(argv [++i]); |
| 213 |
preCompPmapParams.maxGather = atoi(argv [++i]); |
| 214 |
if (!preCompPmapParams.minGather || |
| 215 |
preCompPmapParams.minGather >= |
| 216 |
preCompPmapParams.maxGather) |
| 217 |
goto badopt; |
| 218 |
} |
| 219 |
#endif |
| 220 |
|
| 221 |
else if (!strcmp(argv [i] + 2, "pc")) { |
| 222 |
/* Caustic photon map */ |
| 223 |
check(4, "ss"); |
| 224 |
causticPmapParams.fileName = argv [++i]; |
| 225 |
causticPmapParams.distribTarget = |
| 226 |
parseMultiplier(argv [++i]); |
| 227 |
if (!causticPmapParams.distribTarget) |
| 228 |
goto badopt; |
| 229 |
} |
| 230 |
|
| 231 |
else if (!strcmp(argv [i] + 2, "pv")) { |
| 232 |
/* Volume photon map */ |
| 233 |
check(4, "ss"); |
| 234 |
volumePmapParams.fileName = argv [++i]; |
| 235 |
volumePmapParams.distribTarget = |
| 236 |
parseMultiplier(argv [++i]); |
| 237 |
if (!volumePmapParams.distribTarget) |
| 238 |
goto badopt; |
| 239 |
} |
| 240 |
|
| 241 |
else if (!strcmp(argv [i] + 2, "pd")) { |
| 242 |
/* Direct photon map */ |
| 243 |
check(4, "ss"); |
| 244 |
directPmapParams.fileName = argv [++i]; |
| 245 |
directPmapParams.distribTarget = |
| 246 |
parseMultiplier(argv [++i]); |
| 247 |
if (!directPmapParams.distribTarget) |
| 248 |
goto badopt; |
| 249 |
} |
| 250 |
|
| 251 |
else if (!strcmp(argv [i] + 2, "pC")) { |
| 252 |
/* Light source contribution photon map */ |
| 253 |
check(4, "ss"); |
| 254 |
contribPmapParams.fileName = argv [++i]; |
| 255 |
contribPmapParams.distribTarget = |
| 256 |
parseMultiplier(argv [++i]); |
| 257 |
if (!contribPmapParams.distribTarget) |
| 258 |
goto badopt; |
| 259 |
} |
| 260 |
|
| 261 |
else if (!strcmp(argv [i] + 2, "pD")) { |
| 262 |
/* Predistribution factor */ |
| 263 |
check(4, "f"); |
| 264 |
preDistrib = atof(argv [++i]); |
| 265 |
if (preDistrib <= 0) |
| 266 |
error(USER, "predistribution factor must be > 0"); |
| 267 |
} |
| 268 |
|
| 269 |
#ifdef PMAP_ROI |
| 270 |
/* Region of interest; ziss option for ze egg-spurtz only! */ |
| 271 |
else if (!strcmp(argv [i] + 2, "pi")) { |
| 272 |
int j; |
| 273 |
check(4, "ffffff"); |
| 274 |
for (j = 0; j < 6; j++) |
| 275 |
pmapROI [j] = atof(argv [++i]); |
| 276 |
} |
| 277 |
#endif |
| 278 |
|
| 279 |
else if (!strcmp(argv [i] + 2, "pP")) { |
| 280 |
/* Global photon precomputation factor */ |
| 281 |
check(4, "f"); |
| 282 |
finalGather = atof(argv [++i]); |
| 283 |
if (finalGather <= 0 || finalGather > 1) |
| 284 |
error(USER, "global photon precomputation factor " |
| 285 |
"must be in range ]0, 1]"); |
| 286 |
} |
| 287 |
|
| 288 |
else if (!strcmp(argv [i] + 2, "po") || |
| 289 |
!strcmp(argv [i] + 2, "pO")) { |
| 290 |
/* Photon port */ |
| 291 |
check(4, "s"); |
| 292 |
|
| 293 |
if (ambincl != 1) { |
| 294 |
ambincl = 1; |
| 295 |
portLp = amblist; |
| 296 |
} |
| 297 |
|
| 298 |
if (argv[i][3] == 'O') { |
| 299 |
/* Get port modifiers file */ |
| 300 |
rval = wordfile(portLp, getpath(argv [++i], |
| 301 |
getrlibpath(), R_OK)); |
| 302 |
if (rval < 0) { |
| 303 |
sprintf(errmsg, "cannot open photon port file %s", |
| 304 |
argv [i]); |
| 305 |
error(SYSTEM, errmsg); |
| 306 |
} |
| 307 |
|
| 308 |
portLp += rval; |
| 309 |
} |
| 310 |
|
| 311 |
else { |
| 312 |
/* Append modifier to port list */ |
| 313 |
*portLp++ = argv [++i]; |
| 314 |
*portLp = NULL; |
| 315 |
} |
| 316 |
} |
| 317 |
|
| 318 |
else if (!strcmp(argv [i] + 2, "pr")) { |
| 319 |
/* Random seed */ |
| 320 |
check(4, "i"); |
| 321 |
randSeed = atoi(argv [++i]); |
| 322 |
} |
| 323 |
|
| 324 |
else if (!strcmp(argv [i] + 2, "ps") || |
| 325 |
!strcmp(argv [i] + 2, "pS")) { |
| 326 |
/* Antimatter sensor */ |
| 327 |
check(4, "s"); |
| 328 |
|
| 329 |
if (argv[i][3] == 'S') { |
| 330 |
/* Get sensor modifiers from file */ |
| 331 |
rval = wordfile(sensLp, getpath(argv [++i], |
| 332 |
getrlibpath(), R_OK)); |
| 333 |
if (rval < 0) { |
| 334 |
sprintf(errmsg, "cannot open antimatter sensor file %s", |
| 335 |
argv [i]); |
| 336 |
error(SYSTEM, errmsg); |
| 337 |
} |
| 338 |
|
| 339 |
sensLp += rval; |
| 340 |
} |
| 341 |
|
| 342 |
else { |
| 343 |
/* Append modifier to sensor list */ |
| 344 |
*sensLp++ = argv [++i]; |
| 345 |
*sensLp = NULL; |
| 346 |
} |
| 347 |
} |
| 348 |
|
| 349 |
else goto badopt; |
| 350 |
break; |
| 351 |
|
| 352 |
case 'b': |
| 353 |
if (argv [i][2] == 'v') { |
| 354 |
/* Back face visibility */ |
| 355 |
check_bool(3, backvis); |
| 356 |
} |
| 357 |
|
| 358 |
else goto badopt; |
| 359 |
break; |
| 360 |
|
| 361 |
case 'd': /* Direct */ |
| 362 |
switch (argv [i][2]) { |
| 363 |
case 'p': /* PDF samples */ |
| 364 |
check(3, "f"); |
| 365 |
pdfSamples = atof(argv [++i]); |
| 366 |
break; |
| 367 |
|
| 368 |
case 's': /* Source partition size ratio */ |
| 369 |
check(3, "f"); |
| 370 |
srcsizerat = atof(argv [++i]); |
| 371 |
break; |
| 372 |
|
| 373 |
default: goto badopt; |
| 374 |
} |
| 375 |
break; |
| 376 |
|
| 377 |
case 'e': /* Diagnostics file */ |
| 378 |
check(2, "s"); |
| 379 |
diagFile = argv [++i]; |
| 380 |
break; |
| 381 |
|
| 382 |
case 'f': |
| 383 |
if (argv [i][2] == 'o') { |
| 384 |
/* Force overwrite */ |
| 385 |
check_bool(3, clobber); |
| 386 |
} |
| 387 |
|
| 388 |
else goto badopt; |
| 389 |
break; |
| 390 |
|
| 391 |
case 'i': /* Photon heap size increment */ |
| 392 |
check(2, "i"); |
| 393 |
photonHeapSizeInc = atol(argv [++i]); |
| 394 |
break; |
| 395 |
|
| 396 |
case 'm': /* Medium */ |
| 397 |
switch (argv[i][2]) { |
| 398 |
case 'e': /* Eggs-tinction coefficient */ |
| 399 |
check(3, "fff"); |
| 400 |
setcolor(cextinction, atof(argv [i + 1]), |
| 401 |
atof(argv [i + 2]), atof(argv [i + 3])); |
| 402 |
i += 3; |
| 403 |
break; |
| 404 |
|
| 405 |
case 'a': /* Albedo */ |
| 406 |
check(3, "fff"); |
| 407 |
setcolor(salbedo, atof(argv [i + 1]), |
| 408 |
atof(argv [i + 2]), atof(argv [i + 3])); |
| 409 |
i += 3; |
| 410 |
break; |
| 411 |
|
| 412 |
case 'g': /* Scattering eccentricity */ |
| 413 |
check(3, "f"); |
| 414 |
seccg = atof(argv [++i]); |
| 415 |
break; |
| 416 |
|
| 417 |
default: goto badopt; |
| 418 |
} |
| 419 |
break; |
| 420 |
|
| 421 |
case 't': /* Timer */ |
| 422 |
check(2, "i"); |
| 423 |
photonRepTime = atoi(argv [++i]); |
| 424 |
break; |
| 425 |
|
| 426 |
default: goto badopt; |
| 427 |
} |
| 428 |
} |
| 429 |
|
| 430 |
/* Open diagnostics file */ |
| 431 |
if (diagFile) { |
| 432 |
if (!freopen(diagFile, "a", stderr)) quit(2); |
| 433 |
fprintf(stderr, "**************\n*** PID %5d: ", getpid()); |
| 434 |
printargs(argc, argv, stderr); |
| 435 |
putc('\n', stderr); |
| 436 |
fflush(stderr); |
| 437 |
} |
| 438 |
|
| 439 |
#ifdef NICE |
| 440 |
/* Lower priority */ |
| 441 |
nice(NICE); |
| 442 |
#endif |
| 443 |
|
| 444 |
if (octname == NULL) |
| 445 |
error(USER, "missing octree argument"); |
| 446 |
|
| 447 |
/* Allocate photon maps and set parameters */ |
| 448 |
for (i = 0; i < NUM_PMAP_TYPES; i++) { |
| 449 |
setPmapParam(photonMaps + i, pmapParams + i); |
| 450 |
|
| 451 |
/* Don't overwrite existing photon map unless clobbering enabled */ |
| 452 |
if (photonMaps [i] && !stat(photonMaps [i] -> fileName, &pmstat) && |
| 453 |
!clobber) { |
| 454 |
sprintf(errmsg, "photon map file %s exists, not overwritten", |
| 455 |
photonMaps [i] -> fileName); |
| 456 |
error(USER, errmsg); |
| 457 |
} |
| 458 |
} |
| 459 |
|
| 460 |
for (i = 0; i < NUM_PMAP_TYPES && !photonMaps [i]; i++); |
| 461 |
if (i >= NUM_PMAP_TYPES) |
| 462 |
error(USER, "no photon maps specified"); |
| 463 |
|
| 464 |
readoct(octname, loadflags, &thescene, NULL); |
| 465 |
nsceneobjs = nobjects; |
| 466 |
|
| 467 |
/* Get sources */ |
| 468 |
marksources(); |
| 469 |
|
| 470 |
/* Do forward pass and build photon maps */ |
| 471 |
if (contribPmap) |
| 472 |
/* Just build contrib pmap, ignore others */ |
| 473 |
distribPhotonContrib(contribPmap); |
| 474 |
else |
| 475 |
distribPhotons(photonMaps); |
| 476 |
|
| 477 |
/* Save photon maps; no idea why GCC needs an explicit cast here... */ |
| 478 |
savePmaps((const PhotonMap**)photonMaps, argc, argv); |
| 479 |
cleanUpPmaps(photonMaps); |
| 480 |
|
| 481 |
quit(0); |
| 482 |
|
| 483 |
badopt: |
| 484 |
sprintf(errmsg, "command line error at '%s'", argv[i]); |
| 485 |
error(USER, errmsg); |
| 486 |
|
| 487 |
#undef check |
| 488 |
#undef check_bool |
| 489 |
return 0; |
| 490 |
} |
